Another elderly couple...

(You might need to be a Brit to understand the punchline...)
An elderly couple go to a sex therapist's office. The doctor asks, "What can I do for you ?", and the man replies "Would you monitor us having intercourse, please ?" The doctor raises both eyebrows, but he's so amazed that such an elderly couple are seeking his assistance that he agrees.
When the couple finish, the doctor advises "There's absolutely nothing wrong with the way you're having intercourse".
He thanks them for coming, wishes them good luck, charges them
An elderly couple go to a sex therapist's office. The doctor asks, "What can I do for you ?", and the man replies "Would you monitor us having intercourse, please ?" The doctor raises both eyebrows, but he's so amazed that such an elderly couple are seeking his assistance that he agrees.
When the couple finish, the doctor advises "There's absolutely nothing wrong with the way you're having intercourse".
He thanks them for coming, wishes them good luck, charges them